APA (7th ed.) Citation

World Book, Inc. (1994). The World Book encyclopedia ([International ed.].). World Book International.

Chicago Style (17th ed.) Citation

World Book, Inc. The World Book Encyclopedia. [International ed.]. London ; Chicago: World Book International, 1994.

MLA (9th ed.) Citation

World Book, Inc. The World Book Encyclopedia. [International ed.]. World Book International, 1994.

Warning: These citations may not always be 100% accurate.